Electrodeposition of manganese-nickel oxide films on a graphite sheet for electrochemical capacitor applications

Hae Min Lee; Kangtaek Lee; Chang Koo Kim

doi:10.3390/ma7010265

Electrodeposition of manganese-nickel oxide films on a graphite sheet for electrochemical capacitor applications

Hae Min Lee, Kangtaek Lee, Chang Koo Kim

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

Manganese-nickel (Mn-Ni) oxide films were electrodeposited on a graphite sheet in a bath consisting of manganese acetate and nickel chloride, and the structural, morphological, and electrochemical properties of these films were investigated. The electrodeposited Mn-Ni oxide films had porous structures covered with nanofibers. The X-ray diffractometer pattern revealed the presence of separate manganese oxide (γ-MnO²) and nickel oxide (NiO) in the films. The electrodeposited Mn-Ni oxide electrode exhibited a specific capacitance of 424 F/g in Na²SO⁴ electrolyte. This electrode maintained 86% of its initial specific capacitance over 2000 cycles of the charge-discharge operation, showing good cycling stability.

Original language	English
Pages (from-to)	265-274
Number of pages	10
Journal	Materials
Volume	7
Issue number	1
DOIs	https://doi.org/10.3390/ma7010265
Publication status	Published - 2014

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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title = "Electrodeposition of manganese-nickel oxide films on a graphite sheet for electrochemical capacitor applications",

abstract = "Manganese-nickel (Mn-Ni) oxide films were electrodeposited on a graphite sheet in a bath consisting of manganese acetate and nickel chloride, and the structural, morphological, and electrochemical properties of these films were investigated. The electrodeposited Mn-Ni oxide films had porous structures covered with nanofibers. The X-ray diffractometer pattern revealed the presence of separate manganese oxide (γ-MnO2) and nickel oxide (NiO) in the films. The electrodeposited Mn-Ni oxide electrode exhibited a specific capacitance of 424 F/g in Na2SO4 electrolyte. This electrode maintained 86% of its initial specific capacitance over 2000 cycles of the charge-discharge operation, showing good cycling stability.",

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AU - Lee, Hae Min

AU - Lee, Kangtaek

AU - Kim, Chang Koo

PY - 2014

Y1 - 2014

N2 - Manganese-nickel (Mn-Ni) oxide films were electrodeposited on a graphite sheet in a bath consisting of manganese acetate and nickel chloride, and the structural, morphological, and electrochemical properties of these films were investigated. The electrodeposited Mn-Ni oxide films had porous structures covered with nanofibers. The X-ray diffractometer pattern revealed the presence of separate manganese oxide (γ-MnO2) and nickel oxide (NiO) in the films. The electrodeposited Mn-Ni oxide electrode exhibited a specific capacitance of 424 F/g in Na2SO4 electrolyte. This electrode maintained 86% of its initial specific capacitance over 2000 cycles of the charge-discharge operation, showing good cycling stability.

AB - Manganese-nickel (Mn-Ni) oxide films were electrodeposited on a graphite sheet in a bath consisting of manganese acetate and nickel chloride, and the structural, morphological, and electrochemical properties of these films were investigated. The electrodeposited Mn-Ni oxide films had porous structures covered with nanofibers. The X-ray diffractometer pattern revealed the presence of separate manganese oxide (γ-MnO2) and nickel oxide (NiO) in the films. The electrodeposited Mn-Ni oxide electrode exhibited a specific capacitance of 424 F/g in Na2SO4 electrolyte. This electrode maintained 86% of its initial specific capacitance over 2000 cycles of the charge-discharge operation, showing good cycling stability.

KW - Cycling stability

KW - Electrodeposition

KW - Mn-Ni oxide films

KW - Specific capacitance

KW - Supercapacitor

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Electrodeposition of manganese-nickel oxide films on a graphite sheet for electrochemical capacitor applications

Abstract

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